How Veeps uses Elixir
Veeps rebuilt its backend in Elixir and Phoenix after encountering scaling limits in its earlier system. The rewrite brought the concert platform and its ticket-shopping experience onto one stack.
Phoenix Channels supported interaction during live concerts, while LiveView handled the ticket-shopping journey. The team described completing the rewrite in eight months and supporting events with hundreds of thousands of concurrent viewers.
Source
Read the engineering story. This profile describes the implementation discussed in that source.